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Ramai pelajar sedikit keliru bila menggunakan kaedah completing the square ini memandangkan cara penyelsesaian dilihat agak berbeza bila menyelesaikan topik Quadratic Equations dan Quadartic Functions. As usual, I’ll try show the similarity and what contribute to the ‘differences’.

Bear in mind that the only difference between the two is, Quadratic Equations comes in the form of ax² + bx + c = 0 whereas Quadratic Functions appear in the form of f(x) = ax² + bx + c